Description

The compatibility of different browsers should be considered about test case css(--customProperty)

$elem.css( "--prop2" ) has different val on different browsers:

• firefox 91: $elem.css( "--prop2" ) => 'val2'
• chrome 93: $elem.css( "--prop2" ) => ' val2'
• edge 93: $elem.css( "--prop2" ) => ' val2'

As i know, jQuery.css is based on getComputedStyle and getPropertyValue, and that have different behaves on different browsers.

Link to test case

Please open test case bellow use different browsers and attention the value of --prop2

https://codepen.io/fecore1/pen/KKqNxQx